Zoom lens and image pickup apparatus including the same

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United States of America Patent

PATENT NO 8792047
APP PUB NO 20130242169A1
SERIAL NO

13793355

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Abstract

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A zoom lens includes, in order from an object side to an image side, first and third lens units having a positive refractive power, a second lens unit having a negative refractive power, and a rear lens group. The first lens unit is closer to the object side at a telephoto end than at a wide angle end. The second lens unit is closer to the image side at the telephoto end than at the wide angle end. A distance between the second lens unit and the third lens unit at the telephoto end, focal lengths at the wide angle end and the telephoto end, respectively, a focal length of the second lens unit, and an amount of movement of the second lens unit in an optical axis direction during zooming from the wide angle end to the telephoto end are appropriately set.

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Patent Owner(s)

  • CANON KABUSHIKI KAISHA

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Okubo, Yosuke Chofu, JP 15 73

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